Metal-bending machine



D. T. FREDERICKSON AND E. L, FAULKNER.

METAL BENDINGMACHINE. APPLICATION FILED IIAY 2o, I92I.y

Patented Nov; 7, 1922.,

3. SHEETS-SHEET 2.

w/msssss D. T. FREDERICKSON AND'. L. FAULKNE.

METAL BENDING MACHINE.

APPLlcAloN min my 2o, 1921.

Patented Ngv. 7, 11.922.

3 SHEETS-SHEET 3.

:lil g: E 'lg :5 @il c* I 'l b @n il 5 :'5

f' l l? v v T red r 'casor Anon/Vers 'Patente Nov. .7, 1922.

DAVIDT. FREDERICKS'ON AND EARNST LEE FAULKNER, OF GU'THRIE, OKLAHOMA..

METAL-BENDING MACHINE.

Application `meer nay 2o,

To V.all-'whom t may concern:

Be it'known that we, DAVID. `T. FREDERICK- -soN and FARNEST Las FAULKNER, citizens of .the United States and residents of Guthrie, in .the county offlogan and State of Oklahoma, have invented'certainnew and useful Improvements in Metal-Bending Machines, of which the following is a specification.

, The present invention relates in general to metal bending machines, and more particularly to a metal bar orv rod bending machine.

The object of the invention is to provide a metal bending machinel of this character which is especially adapted for bending or shaping lreinforcement rods or bars used in concretestructures, which possesses a high degree of universality in that it is adaptable to work upon various size rods or bars to formthem into any desired shape or design, which is of simple and durable construction, reliable in operation and easy and inexpen- .sive to manufacture, and which may be operated without necessitating the exercise of a high degree of skill or care on the part of 7the operator. l

Other objects and advantages of the invention reside in certain novel features of construction, combination and arrangement of parts which will bevhereinafter more fully described and particularly pointed out in the appended claims, .reference being had to the accompanying drawings forming 4part of this specification, and-in which: `Figure 1 is a side elevational view of a machine embodying the invention, parts-being broken away and shown in section for the sake lof illustration g Figure 2r is a `plan view thereof;

Figure 3 is an enlarged detail viewfin plan, illustrating the operation of the invention;

Figure 4 is adetailview in transverse vertical section;

f Figure 5 is a detail view in transverse secv tion of the stationary abutment Figure (iis a detail perspective view of the movable bending die;

Figure 7 is a detail view in section of an adjustable die pin and its sleeve, and

Figure 8 is a detail perspective view of the adjustablev abutment.

Referring to the drawings wherein for the .sake of illustration is shown the preferred embodiment of the invention,the numeral 10- designates the work bench or the like 1921. Serial No. rimes.`

having a table 11 of wood or other suitable material and which constitutes the bed of the machine.

A pair of templet plates, designated at 15 and 16, are carried by the table, the templet plate 15 being carried by the top of the table and the templet plate 16 being carried by the underside thereof and alined with the top plate. Fastening means, such as screws or rivets 17, extend through the table and the plates and secure them in position,the screws or rivets being countersunk in the top templet. rlhe upper and lower templet plates and the table are provided with series of alined openings or sockets designated at 15, 162*y and 11a, respectively. The sockets are preferably arranged in rows and are provided in suitable number to give thev machine the requisite capacity to carry out the desired operations.

`A bendingl die, designated generally at 2O is fulcrumed on a stud or pivot bolt 21. The

bending die includes a lever arm 22 reduced as at 23, to accommodate an operating handle 2e* whereby a powerful leverage may be obtained. On the other side of the fulcrum from the llever arm 22 an offset wiper 25 extends and has its outer end curved at 26. The bending die 2O constitutes the relatively stationary ldie of the machine in that its axis is usually fixed. An anglev plate 27is arranged on the templet plate 15 adjacent the bending die and has its vertical leg 27il alined therewith and its horizontal leg 27b secured by rivets 28 to the templet plate 15. The angle plate 27 constitutes a stationary abutment and lies not only adjacent the bending die butalso adjacent one corner of the templet plate 15. y

A plurality of pins designated at 30, are provided and include heads 31a and shanks 30h. The shanks of the pins are adapted to be received in the sockets l5a and the heads thereof upstand from the top templet 15 and are engageable with the rods being bent. A sleeve 31, which varies in size to suit the condition may be arranged on the head 30a. @ne of such pins, either with or without the sleeve, lis arranged in one of the .sockets j untaposed tothe bending die 20 and coacts therewith in the bending action as will be hereinafter more fully described. An adjustable abutment 33 is also `provided and includes a body portion 34 and legs 34- adaptedvto be received in any of the adjacent sockets.` The abutment limits or rod.

Other of'such pins are arranged in the desired socket and coact with a second bending die 35. This second bending die includes a lever arm Se having a reduced portion 37 adapted to have connection With the operating handle 38, an angularly disposed or oii'- set bending die Wiper 39 having its outer end rounded as at 40, and oppositely extending trunnions 4l and 4:2 adapted to constitute tulcrums Ylor this bending die. It is obvious that by turning this bending die on one side or on the other and entering trunnion Il or trunnion 4:2 as the oase may be into one of the sockets the direction in which it exerts a bending action is reversed. In the bending action one of the pins 30 is arranged in juxtaposition to the bending die 35 and coacts therewith in a manner to be hereinafter more 'fully described.

In operation the bar or rod'R to be bent gages the bending of the or shaped is entered into the machine so that a portion of it lies iiush against the vertical leg 2TL of theV stationary abutment 27 and the point at which a bend is desired is alined With the bending die 20, as clearly shown in Figure 2. A. pin 30 is then introduced into the socket juxtaposed rto the bend* ing die. The adjustable abutment-33 isthen positioned on the templet to gage'or limit the bend. The operator then grasps the operating handleQd and turns the bending die 2O on its :tulcrumv during the bending. The Wiper 25 or bending die proper exerts a Wiping pressure on the rod and bends it around 4the adjacent pin 30, rotary motion or translation of the rod being prevented by the action of the stationary abutment 27. When the rod engages the adjustable abutment' 33 the operator ceases to turn and the bending action simultaneously ceases. After the first bend has'been completed anotherpin 30 is inserted in the socket adjacent or immediate to'` the second point of bend and the movable die member 35 has its trunnicn entered into the socket juxtaposed to the pin 30 in a manner to effect bending in the desired direction. The operator then grasps the operating handle 38 and turns the die member 35 on its tulc'rum. The Wiper 39 ot this die member engages the rod and With a wiping lpressure bends it around the pin 30 until 'the rod engages the adjustable abutment 33. As indicated in Figure 2 the degreeof bend., or the point of bend, may be varied at will and is only limited by the number of sockets provided in the templet. The dotted line positions of the bar It in Figure 2 illustrate three additional varieties of bend, the operation to effect which is precisely the same as hereinabove described, except that different sockets are selected for thea pin 30, the adjustable abutment and the trunnion oft the adjustable bending die. It is to be understood that in lieu of the adjustable abutment 33 one of the pins 30 may be utilized if desired.

We claim:

l. In a metal bending machine, a table, a pair of templet plates carried on the opposite sides of the table and secured thereto, said templetplates and said table being provided ivith series of alined openings dening sockets, a. relatively stationary bending die fulcrumed to said table, a pin received in one of said sockets and-coacting with said bending die, a stationary abutment arranged adjacent said bending die, an adjustable bending die having oppositely disposed trunnions adapted for engagement with the sockets of the templet, a pin received in a socket of the templet and coacting With said adjustable bending die and an adjustable abutment including a body portion and legs adapted to be received in said sockets.

` 2. In a metal vbending machine, a templet having sockets therein, a relatively stationary bending die, a pin adapted to be received in one of lsaidsockets and coacting with the bending die, a stationary abutment arranged adjacent said bending die, an adjustable bending die having oppositely disposed trunnions adapted for engagement With the sockets oi" the templet, a pin received in one of the sockets and coactingvvith the adjustable bending die, and an adjustable abutment adapted to be received in the sockets of the templet.

3. In a metal bending machine, a templet having sockets therein, a relatively stationary bending die, a pin adapted to be received in one of said sockets andcoacting With the bending die., a stationary abutment arranged adjacent said bending die, an adjustable bending :die havingV cppositely disposed trunnions adapted Jfor engagement with the sockets of the templet, and a pin received in one of the sockets and coacting With 'the adjustable bending die. I Y

4. In a metal bending machine, a templet plate having sockets therein, a relatively stationary bending die, a'n adjustable bending die having a trunnion' adapted to be selectively engaged'ivith the sockets of the templet plate, and a pin cooperable with'the adjustable bending die and also selectively engageable with the sockets of the templet plate.

5. In a inetal'bending machine, a templet having sockets and an4 adjustable and reversible bending die having oppositely disposed trunnions engageable with the sockets oi' the templet, and a pin cooperable with the bending die and also selectively engageable with the sockets ot thetemplet.

6.' In a metal bending machine, a. table, a pair ot templet plates carried on the opposite sidesy of the table and secured thereto, said templet plates and said table being provided with series of alined openings defin ing sockets, a relatively stationary bending die fulerumed to said table and having a lever arm and an offset Wiper7 a pin received in a socket juxtaposed to said bending die and coacting therewith, a stationary abutment arranged adjacent said bending die and coacting therewith and comprising an angle plate secured to said table, and an adjustable abutment including a body portion, and legs adapted to be secured in said sockets.

DAVID T. FREDERICKSON. EARNEST LEE FAULKNER. 

